drivers/crypto/ccp/psp-dev.h

   1 /*
   2  * AMD Platform Security Processor (PSP) interface driver
   3  *
   4  * Copyright (C) 2017 Advanced Micro Devices, Inc.
   5  *
   6  * Author: Brijesh Singh <brijesh.singh@amd.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef __PSP_DEV_H__
  14 #define __PSP_DEV_H__
  15
  16 #include <linux/device.h>
  17 #include <linux/pci.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/mutex.h>
  20 #include <linux/list.h>
  21 #include <linux/wait.h>
  22 #include <linux/dmapool.h>
  23 #include <linux/hw_random.h>
  24 #include <linux/bitops.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/irqreturn.h>
  27 #include <linux/dmaengine.h>
  28 #include <linux/psp-sev.h>
  29 #include <linux/miscdevice.h>
  30
  31 #include "sp-dev.h"
  32
  33 #define PSP_CMD_COMPLETE                BIT(1)
  34
  35 #define PSP_CMDRESP_CMD_SHIFT           16
  36 #define PSP_CMDRESP_IOC                 BIT(0)
  37 #define PSP_CMDRESP_RESP                BIT(31)
  38 #define PSP_CMDRESP_ERR_MASK            0xffff
  39
  40 #define MAX_PSP_NAME_LEN                16
  41
  42 struct sev_misc_dev {
  43         struct kref refcount;
  44         struct miscdevice misc;
  45 };
  46
  47 struct psp_device {
  48         struct list_head entry;
  49
  50         struct psp_vdata *vdata;
  51         char name[MAX_PSP_NAME_LEN];
  52
  53         struct device *dev;
  54         struct sp_device *sp;
  55
  56         void __iomem *io_regs;
  57
  58         int sev_state;
  59         unsigned int sev_int_rcvd;
  60         wait_queue_head_t sev_int_queue;
  61         struct sev_misc_dev *sev_misc;
  62         struct sev_user_data_status status_cmd_buf;
  63         struct sev_data_init init_cmd_buf;
  64
  65         u8 api_major;
  66         u8 api_minor;
  67         u8 build;
  68 };
  69
  70 #endif /* __PSP_DEV_H */